As soon as the application is executed, it checks if a Monitor is connected or not. If a monitor is already connected, then it starts up the following options as shown in the following figure to choose from (KC705).
Selecting either r
or s
puts the system in Pass-Through mode, where the RX receives the video
and forwards it to TX. This configures the vid_phy_controller
and sets up the DisplayPort for RX. If a DisplayPort
Source (for example, GPU) is already connected to DP RX, it starts the training. Else,
the training happens when the cable is plugged in. As soon as the training is completed,
the application starts the DP TX Subsystem. The video should be seen on the monitor once
the TX is up. The previous figure shows the UART transcript. The transcript may differ
based on the training done by GPU.